/* CoralCube | Massively Multiplayer Online Role-Playing Game(MMORPG) Emulator.
|* 
|* Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
|*               2008-2010 TrinityCore <http://www.trinitycore.org/>
|*               2008-2010 CoralCube <http://www.CoralCube.com/>
|*
|* This program is free software. You can redistribute it and/or modify it under the terms of 
|* the GNU General Public License as published by the Free Software Foundation, either 
|* version 2 of the License.
|*
|* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY, 
|* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
|* See the GNU General Public License for more details.
|*
|* You should have received a copy of the GNU General Public License along with this program. 
|* If not, see <http://www.gnu.org/licenses/>.
|*/

#ifndef CORE_FACTORY_HOLDER
#define CORE_FACTORY_HOLDER

#include "Define.h"
#include "Dynamic/TypeList.h"
#include "ObjectRegistry.h"

/* FactoryHolder holds a factory object of a specific type */
template<class T, class Key = std::string>
class FactoryHolder
{
public:
    typedef ObjectRegistry<FactoryHolder<T, Key >, Key > FactoryHolderRegistry;
    friend class ACE_Singleton<FactoryHolderRegistry, ACE_Null_Mutex>;
    typedef ACE_Singleton<FactoryHolderRegistry, ACE_Null_Mutex> FactoryHolderRepository;

    FactoryHolder(Key k) : i_key(k) { }
    virtual ~FactoryHolder() { }
    inline Key key() const { return i_key; }

    void RegisterSelf(void) { FactoryHolderRepository::instance()->InsertItem(this, i_key); }
    void DeregisterSelf(void) { FactoryHolderRepository::instance()->RemoveItem(this, false); }

    /// Abstract Factory create method
    virtual T* Create(void *data = NULL) const = 0;
private:
    Key i_key;
};

/* Permissible is a classic way of letting the object decide
|* whether how good they handle things.  This is not retricted
|* to factory selectors. */
template<class T>
class Permissible
{
public:
    virtual ~Permissible() { }
    virtual int Permit(const T *) const = 0;
};
#endif
